GimpSymmetry *
gimp_symmetry_from_parasite (const GimpParasite *parasite,
GimpImage *image,
GType type)
{
GimpSymmetry *symmetry;
gchar *parasite_name;
const gchar *str;
GError *error = NULL;
parasite_name = gimp_symmetry_parasite_name (type);
g_return_val_if_fail (parasite != NULL, NULL);
g_return_val_if_fail (strcmp (gimp_parasite_name (parasite),
parasite_name) == 0,
NULL);
g_free (parasite_name);
str = gimp_parasite_data (parasite);
g_return_val_if_fail (str != NULL, NULL);
symmetry = gimp_image_symmetry_new (image, type);
if (! gimp_config_deserialize_string (GIMP_CONFIG (symmetry),
str,
gimp_parasite_data_size (parasite),
NULL,
&error))
{
g_warning ("Failed to deserialize symmetry parasite: %s", error->message);
g_error_free (error);
}
return symmetry;
}
GimpParasite *
gimp_symmetry_to_parasite (const GimpSymmetry *sym)
{
GimpParasite *parasite;
gchar *parasite_name;
gchar *str;
g_return_val_if_fail (GIMP_IS_SYMMETRY (sym), NULL);
str = gimp_config_serialize_to_string (GIMP_CONFIG (sym), NULL);
g_return_val_if_fail (str != NULL, NULL);
parasite_name = gimp_symmetry_parasite_name (G_TYPE_FROM_INSTANCE (sym));
parasite = gimp_parasite_new (parasite_name,
GIMP_PARASITE_PERSISTENT,
strlen (str) + 1, str);
g_free (parasite_name);
g_free (str);
return parasite;
}
GimpSymmetry *
gimp_symmetry_from_parasite (const GimpParasite *parasite,
GimpImage *image,
GType type)
{
GimpSymmetry *symmetry;
gchar *parasite_name;
const gchar *str;
GError *error = NULL;
parasite_name = gimp_symmetry_parasite_name (type);
g_return_val_if_fail (parasite != NULL, NULL);
g_return_val_if_fail (strcmp (gimp_parasite_name (parasite),
parasite_name) == 0,
NULL);
str = gimp_parasite_data (parasite);
if (! str)
{
g_warning ("Empty symmetry parasite \"%s\"", parasite_name);
return NULL;
}
symmetry = gimp_image_symmetry_new (image, type);
g_object_set (symmetry,
"version", -1,
NULL);
if (! gimp_config_deserialize_string (GIMP_CONFIG (symmetry),
str,
gimp_parasite_data_size (parasite),
NULL,
&error))
{
g_printerr ("Failed to deserialize symmetry parasite: %s\n"
"\t- parasite name: %s\n\t- parasite data: %s\n",
error->message, parasite_name, str);
g_error_free (error);
g_object_unref (symmetry);
symmetry = NULL;
}
g_free (parasite_name);
if (symmetry)
{
gint version;
g_object_get (symmetry,
"version", &version,
NULL);
if (version == -1)
{
/* If version has not been updated, let's assume this parasite was
* not representing symmetry settings.
*/
g_object_unref (symmetry);
symmetry = NULL;
}
else if (GIMP_SYMMETRY_GET_CLASS (symmetry)->update_version (symmetry) &&
! GIMP_SYMMETRY_GET_CLASS (symmetry)->update_version (symmetry))
{
g_object_unref (symmetry);
symmetry = NULL;
}
}
return symmetry;
}
